STWBCTR datasheet(8/36 Pages) STMICROELECTRONICS

номер детали	STWBCTR

подробное описание детали	Digital controller for wireless battery charger

Download	36 Pages

Scroll/Zoom	100%

производитель	STMICROELECTRONICS [STMicroelectronics]

домашняя страница	http://www.st.com

Logo

8 / 36 page

Introduction to wireless battery charging systems

STWBC

8/36

DocID027322 Rev 3

2

Introduction to wireless battery charging systems

Wireless battery charging systems replace the traditional power supply cable by means of

electromagnetic induction between a transmitting pad (TX) and a battery powered unit (RX),

such as a mobile phone or a battery pack.

The power transmitter unit is responsible for controlling the transmitting coil and generating

the correct amount of power requested by the receiver unit. The receiver unit continuously

feedbacks to the transmitter the correct power level requested by modulating the transmitter

carrier by means of a controlled resistive of capacitive insertion. Generating the correct

amount of power guarantees the highest level of end-to-end efficiency due to reduced

energy waste. Also, it helps maintaining a lower operational temperature.

The digital feedback is also used to detect foreign objects, i.e.: metal incorrectly exposed to

the coils. By stopping the application as soon as a foreign object is detected the risk of

damage is reduced.

Digital wireless battery transmitters can adapt the amount of energy transferred by the coil

by modulating the frequency, duty cycles or coil input voltage.

Figure 2. System view of a wireless charging system

Thanks to the internal STWBC 96 MHz clock, support for half-bridge and full bridge

topologies and protocol detection units, the STWBC can drive the power emitted by

a transmitting coil. The STWBC firmware sits on the top of the hardware to monitor and

control the correct wireless charging operations.

Аналогичный номер детали - STWBCTR

производитель	номер детали	датащи	подробное описание детали
STMicroelectronics	STWBC-EP	715Kb / 32P	Digital controller for wireless battery chargers transmitters for Qi 15 W applications October 2017 Rev 1
	STWBC-EP	2Mb / 4P	Qi MP-A15 15W wireless charger TX evaluation kit based on STWBC-EP May 2019
	STWBC-EPTR	715Kb / 32P	Digital controller for wireless battery chargers transmitters for Qi 15 W applications October 2017 Rev 1
	STWBC-WA	751Kb / 7P	2.5 W wireless charger transmitter evaluation kit April 2018
	STWBC2-HP	5Mb / 96P	Digital controller for wireless battery charger transmitters Rev 1.0 - September 2021

производитель	номер детали	датащи	подробное описание детали
STMicroelectronics	STWBC2-HP	5Mb / 96P	Digital controller for wireless battery charger transmitters Rev 1.0 - September 2021
Silicon Standard Corp.	SS6781A	844Kb / 18P	Battery Charger Controller
ATMEL Corporation	AT73C214	118Kb / 5P	Power Management and Battery Charger for Wireless Devices
STMicroelectronics	STWBC-EP	715Kb / 32P	Digital controller for wireless battery chargers transmitters for Qi 15 W applications October 2017 Rev 1
Linear Technology	LTC4100	251Kb / 24P	Smart Battery Charger Controller
Renesas Technology Corp	M62254FP	233Kb / 12P	Standard Battery Charger Controller
Linear Technology	LTC4100	252Kb / 30P	Smart Battery Charger Controller
Linear Technology	LTC4101	260Kb / 30P	Smart Battery Charger Controller
Mitsubishi Electric Sem...	M62254FP	68Kb / 6P	Standard Battery Charger Controller
Texas Instruments	BQ24702	886Kb / 37P	[Old version datasheet] MULTICHEMISTRY BATTERY CHARGER CONTROLLER